1845642444 has 48 divisors (see below), whose sum is σ = 4597044480. Its totient is φ = 574620480.

The previous prime is 1845642437. The next prime is 1845642481. The reversal of 1845642444 is 4442465481.

It is a junction number, because it is equal to n+sod(n) for n = 1845642396 and 1845642405.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40819 + ... + 73194.

It is an arithmetic number, because the mean of its divisors is an integer number (95771760).

Almost surely, 2^1845642444 is an apocalyptic number.

It is an amenable number.

1845642444 is an abundant number, since it is smaller than the sum of its proper divisors (2751402036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1845642444 is a wasteful number, since it uses less digits than its factorization.

1845642444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114110 (or 114108 counting only the distinct ones).

The product of its digits is 491520, while the sum is 42.

The square root of 1845642444 is about 42960.9409114838. The cubic root of 1845642444 is about 1226.6364233578.

The spelling of 1845642444 in words is "one billion, eight hundred forty-five million, six hundred forty-two thousand, four hundred forty-four".